An alder tree in the summer sun.
- The definition of an alder is a small fast growing tree or shrub that grows in cool soil and cold climates.
An example of an alder is a plant in the birch family.
Origin of alderMiddle English alder, aller ; from Old English alor, aler ; from Indo-European base an unverified form el-: see elm
- Any of various deciduous shrubs or trees of the genus Alnus, native chiefly to northern temperate regions and having alternate simple toothed leaves and woody, conelike catkins.
- The wood of these plants, used in carvings and for making furniture and cabinets.
Origin of alderMiddle English, from Old English alor.
- Any of several trees or shrubs of the genus Alnus, belonging to the birch family.
- grey alder
- hazel alder
- Himalayan alder
- Italian alder
- Japanese alder
- Mexican alder
Middle English alder, aller, from Old English alor, from Proto-Germanic *aluz, *alusō (compare Swedish al, East Frisian ällerboom), variant of *alizō, *alisō (compare Dutch els, German Erle), from Proto-Indo-European *h₂élisos (compare Hittite [script?] (alanza(n)), Latin alnus, Latvian àlksnis, Polish olcha, Albanian halë 'black pine', Ancient Macedonian (Hesychius) άλιχα (álicha, “white poplar”)
This is the customary abbreviation of this term as used in case citations. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Court Names", Table T7, p. 432-434.